9% of global electricity is generated from Nuclear
Nuclear energy is a form of low-carbon energy that harnesses the power released by atomic reactions, typically through the process of nuclear fission. In nuclear power plants, the nuclei of heavy atoms, such as uranium-235, are split into smaller parts when they absorb a neutron, releasing a significant amount of energy. This energy is released in the form of heat, which is used to produce steam that drives turbines connected to electricity generators. Nuclear energy is an important part of the global push for cleaner electricity, helping to reduce reliance on fossil fuels that contribute to climate change and air pollution.
The process of generating electricity in a nuclear power plant begins with the enrichment of uranium to increase the percentage of uranium-235. This enriched uranium serves as fuel in the reactor core, where controlled fission reactions occur. The heat produced from these nuclear reactions is used to convert water into steam. This high-pressure steam is then used to spin turbines, which drive the generators that produce electricity. This method of electricity generation is highly efficient and can provide a steady and reliable energy supply, making nuclear power a critical component in the global energy mix.
One of the primary advantages of nuclear energy is its very low carbon intensity. With a carbon intensity of only 12 gCO2eq/kWh, nuclear power has emissions comparable to other low-carbon sources like wind (11 gCO2eq/kWh) and solar (45 gCO2eq/kWh). This makes nuclear energy an attractive option for reducing overall carbon emissions, especially when compared to fossil fuels such as coal and natural gas, which have carbon intensities of 820 and 490 gCO2eq/kWh, respectively. By harnessing such clean energy sources, countries can significantly cut down their carbon footprints and contribute to the global effort to combat climate change.
Nuclear energy contributes substantially to the global electricity supply, accounting for more than 8% of worldwide electricity consumption. Some regions have embraced nuclear power even more extensively. For example, in South Carolina and New Hampshire, more than half of their electricity is generated from nuclear power. Meanwhile, in Alabama, nuclear energy provides almost a third of the state's electricity needs. Illinois also benefits significantly, with nuclear providing around half of its electricity. In Finland, nuclear delivers 38% of the electricity supply. These examples highlight nuclear energy's significant role in achieving clean energy goals and ensuring a stable energy supply.
Besides its low carbon footprint, nuclear energy offers the advantage of providing a continuous and stable power supply. Unlike some other clean energy sources that depend on weather conditions, nuclear power plants operate consistently, regardless of external environmental factors. This makes nuclear an invaluable player in maintaining energy balance, especially in regions that may not have favorable conditions for solar or wind power. As the world moves towards increased electrification to support growing demands from societal advancements and technologies like AI, the role of nuclear power becomes even more critical.
Expanding nuclear and solar energy presents a clear path toward a sustainable future. Solar energy, despite slightly higher carbon intensity than wind and nuclear, plays an essential role in the clean energy landscape. Together with wind, these technologies form the backbone of a low-carbon electricity system, ensuring reliable and environmentally friendly power solutions. The move towards more extensive use of nuclear and solar electricity generation is vital in our pursuit of an energy system that supports both human wellbeing and environmental integrity while fostering continuous economic growth. Embracing these clean technology solutions is a win for our planet, economies, and future generations.
| Country/Region | kWh/person | % | TWh |
|---|---|---|---|
| South Carolina | 10032.8 W | 53.4% | 55.8 TWh |
| Alabama | 8234.7 W | 30.0% | 42.7 TWh |
| New Hampshire | 7702.0 W | 54.1% | 10.9 TWh |
| Illinois | 7697.6 W | 49.7% | 97.2 TWh |
| Finland | 5955.9 W | 38.1% | 33.5 TWh |
| Pennsylvania | 5748.5 W | 30.3% | 75.1 TWh |
| France | 5678.0 W | 67.4% | 379.3 TWh |
| Arkansas | 4773.1 W | 21.8% | 14.8 TWh |
| Tennessee | 4642.5 W | 28.9% | 33.9 TWh |
| Connecticut | 4525.2 W | 36.3% | 16.7 TWh |
| Georgia (US) | 4511.2 W | 30.2% | 50.9 TWh |
| Arizona | 4046.2 W | 25.3% | 31.1 TWh |
| Sweden | 3990.3 W | 25.6% | 42.7 TWh |
| North Carolina | 3813.8 W | 27.5% | 42.7 TWh |
| Louisiana | 3609.4 W | 15.3% | 16.5 TWh |
| Mississippi | 3464.8 W | 13.2% | 10.2 TWh |
| Nebraska | 3445.9 W | 16.6% | 6.9 TWh |
| Slovakia | 3319.1 W | 65.4% | 18.4 TWh |
| Virginia | 3271.5 W | 18.0% | 28.9 TWh |
| South Korea | 3184.2 W | 26.2% | 164.8 TWh |
| Kansas | 3120.7 W | 14.6% | 9.3 TWh |
| United Arab Emirates | 3032.3 W | 19.6% | 32.3 TWh |
| New Jersey | 2900.0 W | 32.6% | 27.6 TWh |
| Czechia | 2734.9 W | 41.9% | 29.7 TWh |
| Michigan | 2690.9 W | 21.4% | 27.3 TWh |
| Slovenia | 2590.3 W | 40.2% | 5.5 TWh |
| Maryland | 2377.4 W | 22.2% | 14.9 TWh |
| United States | 2269.5 W | 17.0% | 784.9 TWh |
| Minnesota | 2225.4 W | 17.8% | 12.9 TWh |
| Bulgaria | 2130.7 W | 38.7% | 14.3 TWh |
| Canada | 2015.7 W | 12.9% | 80.6 TWh |
| Belarus | 1868.3 W | 37.7% | 16.7 TWh |
| Switzerland | 1801.3 W | 24.1% | 16.2 TWh |
| Wisconsin | 1687.7 W | 13.0% | 10.1 TWh |
| Hungary | 1536.5 W | 31.7% | 14.8 TWh |
| Russia | 1523.3 W | 19.1% | 220.5 TWh |
| Ukraine | 1512.1 W | 54.6% | 62.1 TWh |
| Ohio | 1465.2 W | 9.7% | 17.4 TWh |
| New York | 1420.3 W | 17.2% | 27.9 TWh |
| EU | 1373.0 W | 23.0% | 619.4 TWh |
| Belgium | 1349.6 W | 20.0% | 15.9 TWh |
| Texas | 1303.4 W | 6.9% | 41.4 TWh |
| Florida | 1262.0 W | 10.4% | 30.0 TWh |
| Missouri | 1152.0 W | 8.2% | 7.2 TWh |
| Spain | 1077.5 W | 18.5% | 51.9 TWh |
| Armenia | 998.2 W | 29.3% | 2.9 TWh |
| Washington | 960.8 W | 7.0% | 7.7 TWh |
| Japan | 762.8 W | 9.6% | 94.0 TWh |
| Romania | 507.8 W | 19.0% | 9.6 TWh |
| United Kingdom | 481.5 W | 11.0% | 33.4 TWh |
| California | 445.4 W | 5.9% | 17.5 TWh |
| People's Republic of China | 334.9 W | 4.5% | 476.7 TWh |
| The World | 327.3 W | 8.7% | 2694.1 TWh |
| Argentina | 231.0 W | 7.1% | 10.6 TWh |
| Netherlands | 206.0 W | 2.8% | 3.8 TWh |
| South Africa | 156.9 W | 4.4% | 10.2 TWh |
| Pakistan | 92.3 W | 14.5% | 23.7 TWh |
| Mexico | 77.0 W | 2.8% | 10.1 TWh |
| Brazil | 62.8 W | 1.8% | 13.4 TWh |
| India | 35.7 W | 2.6% | 52.2 TWh |
| Republic of China (Taiwan) | 17.1 W | 0.1% | 0.4 TWh |
| Sub-Saharan Africa | 8.2 W | 2.0% | 10.1 TWh |








